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Temperature detection circuit based on integral calculation

A technology of temperature detection circuit and integration, which is applied in thermometers, thermometer parts, thermometers with electric/magnetic elements directly sensitive to heat, etc., can solve the problems of inability to detect temperature changes, high cost, low detection sensitivity, etc.

Inactive Publication Date: 2019-04-05
广州市优仪科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the temperature detection circuit based on integral calculation in the prior art has low detection sensitivity and cannot detect small temperature changes. Moreover, the circuit structure is complex and the cost is high

Method used

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  • Temperature detection circuit based on integral calculation
  • Temperature detection circuit based on integral calculation
  • Temperature detection circuit based on integral calculation

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Embodiment Construction

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0037] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicati...

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Abstract

The invention provides a temperature detection circuit based on integral calculation. The temperature detection circuit comprises four temperature sensor input units, a gating module, a signal amplifying module of which the input end is connected with the output end of the gating module and is used for amplifying a detection voltage signal output by the gating module to obtain an amplified signal,an integration module which is connected to the output end of the signal amplifying module to obtain the amplified signal and performs integral operation on the amplified signal, a voltage comparisonmodule which is connected with the integration module to compare an integral voltage output after the integral operation of the integration module with a preset voltage and outputs a level signal according to a comparison result and a central processing module which is connected with the voltage comparison module, wherein the central processing module is connected to the control terminal of a first gating chip to control an integral unit to switch between an integration phase and a discharge phase through a first gating unit, and is used for calculating and obtaining a temperature value according to the duration of a preset level in the level signal output by the voltage comparison module.

Description

technical field [0001] The invention relates to the field of temperature detection, in particular to a temperature detection circuit based on integral calculation. Background technique [0002] In the prior art, the temperature detection mostly adopts the thermistor to sense the temperature change, and realizes the temperature detection by sensing the voltage change on the thermistor. [0003] However, the temperature detection circuit based on integral calculation in the prior art has low detection sensitivity and cannot detect small temperature changes. Moreover, the circuit structure is complex and the cost is high. [0004] Therefore, there are defects in the prior art, and improvement is badly needed. Contents of the invention [0005] The purpose of the present invention is to provide a temperature detection circuit based on integral calculation, which has the beneficial effects of improving detection accuracy and reducing cost. [0006] An embodiment of the presen...

Claims

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Application Information

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IPC IPC(8): G01K1/02G01K7/02
CPCG01K1/026G01K7/021
Inventor 叶南洋
Owner 广州市优仪科技有限公司
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